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Finding the Fourth Proportional to 40,908.60, 61,319.70 and 23,340.60

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Solution

The fourth proportional to 40,908.60, 61,319.70 and 23,340.60 is: 34,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.60 : 61,319.70 = 23,340.60 : x
  2. Step 2: Convert to fraction form
    40,908.60/61,319.70 = 23,340.60/x
  3. Step 3: Cross multiply
    40,908.60x = 61,319.70 × 23,340.60
  4. Step 4: Simplify right side
    40,908.60x = 1,431,238,589.82
  5. Step 5: Solve for x
    x = 1,431,238,589.82/40,908.60
  6. Step 6: Final answer
    x = 34,986.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.